Just chiming in to say that I’d also be interested in seeing the IMAX version reconstructed.
I saw the movie on opening day at Air & Space Udvar-Hazy in 2D IMAX-with-laser and the imagery during those sequences was breathtaking.
Saw the theatrical version twice in 70mm here in London, and yes - breathtaking. Which is why WB’s decision on this release was so disappointing…
Anyway - we know Korea’s Naver has the 16:9 master needed for this (but I’m not entirely sure there’s a good way to capture something off Naver + this is at best a 5-6GB file for 1080p which is not ideal…) In the US - maybe DirecTV or RentMoviesOnDemand or Xfinity (or any cable-based VOD) may have this 16:9 version?